“APPLYING BOUNDARY ELEMENT METHOD TO SOLVE THE HEAT CONDUCTION PROBLEMS USING CONSTANT ELEMENT”, J. eng. sustain. dev., vol. 19, no. 3, pp. 141–157, May 2015, Accessed: May 15, 2024. [Online]. Available: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/772